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Re: [TCML] Isolated secondary building up charge



On 3/26/14 1:16 AM, Krux wrote:
So this is a new one for me, but then I have only built one tesla coil, so the whole hobby is new...

Anyway, I was tearing down my tesla coil, as I had designed it so that I could take it apart to easily transport it if needed.  I was carrying the 4.5" diameter secondary with top load attached across the room when I noticed it had a charge on it.. The charge was minimal at first, like if you are building up a static electric charge on something, and then when I was half way into the room it crossed into a "hey.. Ow.. Let's put this coil down on this bench here" level of painful zap..

My best guess is that I was picking up on the magnetic fields that were being put off by all the florescent lighting in the room. Either that or my movement some how built up a static charge.. But has anyone heard of/experienced something like this before.


this has been noticed by lots of folks. It's not magnetic fields, but electrostatic. Your coil has a nice insulating surface, so the secondary makes a fine capacitor.

I forget what it gets called if you want to search the archives. "residual charge" would be a good start.

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